Rotary internal-combustion engine.



C. E. BROMAN.

ROTIY-INTERNAL COMBUSJION ENGINE. APPuc/mon mso mAH-.1914.

pmfm@ Patented May 25, 1915.

6 SHEETS-SHEET l.

C. E. BROMAN.

ROTARY INTERNAL COMBUSTION ENGINE.

APPLICATION FILED MAYI. 1,914.

Patented May 25, 1915.'

6 SHEETS-SHEET 2.

@9 7 l lf3 mifmamo C. E. BRGM/XN.

ROTARY INTERNAL COMBUSTlON ENGINE.

APPLICATION FILED MAY T, 1914.

v v v ?atentedMa,y 25, 1915 6 SHEETS-SHEET 3.

l c. E. EROI/IAN'. ROTARY INTERNAL COMBUSTION ENGINE.

APPLICATION FILED MAY 7, 1914.

Patented; May 25, 1915 e SHEETS-suini C. E. BROVIAN ROTARY {NTERNALCOMBUSTION ENGINE.

APPLlcATroN FILED MAY?. 1914.

5 SHEETS-SHEET 5.

O Jig UMa/@Cia bww/MAM K Y y /A 1l m l a @if L E,

fm Q' C. E. BROMAN.

ROTARY INTERNAL OOMBUSTION ENGINE.

APPLICA-HUN FILED MAY 7| 9 14. Y LQSJD Patented May 25, 1915.' I y y 6SHEETS-SHEET 6- T Qu., Ww j a PATENT f I CHAR/LES E. BEBE/IAN, GRANDRAPIDS, MICHlGAN.

RGTARY NTERNAL-COIUSTION ENGINE.

Application lled may 7, 1914.

T0 all whom t may concern it lniown that l, CHARLES E. BROMAN, a citizenot the United States, residing at Grand Rapids, Michigan, have inventedcertain new and useful improvements in Rotary Internal-CombustionEngines, of which the following is a specification.

rIhis invention relates to improvements in rotary internal combustionengines. y

riihe main objects lci? this invention are: First, to provide animproved rotary internal combustion engine. Second, to provide animproved rotary internalcomhustion engine having lined cylinderabutments. Third, to provide in a rotary internal combustion engine'animproved means for delivering the gas or fuel to the combustion chamberunder compression. Fourth, to provide in a rotary internal combustionengine an.improved ignition means. Fifth, to provide in a rotaryinternal combustion engine an improved fuel feed means.

' Further objects, and objects relating to structural details, willdefinitely appear from the detailed description to follow.

l accomplish the objects of my invention hy the devices and meansdescribed in the following specification.

The invention is clearly' deiined and pointed out in the claims. i

structure which is a preferred embodiment of my invention is clearlyillustrated in the accompanying drawing forming a part of thisspecification, in which:

Figure l is an end View of a structure embodying the features of myinvention, the ignition means and connections being omitted. F ig. ll isa side view. of the structure appearing in F Iig. l looking from theleft thereof. Fig. lll is a vertical central /lhngitudinal section on aline corresponding l'to line 3-.3 of Figs. l, lV, V, Vl and Vl Fig. lVis a' vertical central transverse section ou a line corresponding toline 4-4 of .45 Figs. Il and HI. Fig. V is a detail transverse sectionon a line corresponding to line 5 5 of Fig. lll. Fig. VI is a verticaltransverse section on a line corresponding to line 6-6 of Figs. lil andIll. Fig. Vil

is a detail vertical transverse section on a line corresponding to line7-7 of Fig. IH. Fig. Vlll is an enlarged detail transverse section on aline corresponding tol-ine 8-8 of Fig. IX showing details of the pistonor rotor and ci the piston blades andA abut- Speccaton of LettersPatent.

Patented May 25, MM5.

Serial No. 836,839.

ments. Fig. IX is a detail longitudinal Section taken on a linecorresponding to the broken line 9-9 of Fig. Vlll. Fig. X is a detailsection on a line corresponding to lin-e l0-l0 of Fig. V showing detailsof the piston blade controlling mechanism. Fig. Xl is a detail sectionon a line corresponding to line ll--ll of XH showing details of theignitionv mechanism. Fig. XH is a detail section on a line correspondingto line 12H12 of Fig. Xl showing further details of theignitionmechanism. Fig. Kill is a detail section on a line corresponding to linelf3-13 of Fig. XH showing still iurther details of the ignitionmechanism. Fig. XIV is a detail section on a line corresponding to thebroken line l-lei oi Figs. Vl and XV, the piston or rotor being omitted.Fig. XV is a detail section on a line corresponding to line 15--15 ofFig. XlV. Fig. XVl is a detail section on a line correspond ing to line16---16 of Fig. Vl, showing details of the water connections. Fig. XVMis a detail sec-tionen a line corresponding to line 17-17 of Fig. l,showing details of the fuel feed mechanism.

ln the drawing similar reference characters refer to similar partsthroughout the several views, and the sectional views are taken lookingin the direction of the little arrows at the ends of the section lines.

Referring to the drawing, the structure illustrated is provided with acvlindrical outer casing Al provided with removable heads 2, the headsbeing shouldered at 3 to receive the casing. See Fig. lll. The base 4fis formed on the bottom of the casing. The casing heads areprovided-with bearings 5 for the shaft 6.] The cylinder is disposedwithin the casing and provided with longitudinal peripheral ribs S whichlit the walls of the casing centering the cylv inder therein and alsoproviding water 0cv b the piston member so that the innerv faces of withjournals 36 at each end communicate with the water spaces 9 so thatyother suitable cooling means are through the passages 15 in the base 4of the machine, which passages communicate with the water spaces 9 atthe bottom of the cylinder. See Figs. I, IV, V, VII and XIV.

The rotor or rotary piston 16 is mounted on the shaft 6 and providedwith end plates 17 which rotate Within the cylinder heads 10 which havesuitable finished faces 18 for the rotor heads. The rotor heads areprovided with suitable packing rings 19. The rotor heads have recesses20 on their outer sides into which the cylindrical delivery passagemembers 21 on the inner -side of the casing heads project. See Fig. III.These members.' 21 have annular passages 22'therein which are connected,by conduits or passages 23 in the casing heads 2 and channels 23 formedby the walls 23 on the cylinder heads 10, to the inlet passage 24suitably connected to the carbureter7 the connection notbeing shown.Between the members 2l and the flange 13 of the cylinder heads are.spaces or chambers 25 which contain certain mechanisms to be described.

The rotor 16 has compression chambers 26 therein, the compressionchambers beingl preferably formed in the body of the rotor and extendingfi'om end to end thereof between the rotor end plates which form endsfor the chambers 26. The end plates 17 have ports 27 thereincommunicating or registering with the ports 29 of the valves 30 as therotor revolves. The valves 30 are rotatably mounted in the ends of thepassage members 21. See Figs. III and VII. The valves 30l may beadjusted from the levers 31 on the rock shafts 32 which are slotted at33 to engage the pin 34 on the valves. See Figs. I andXVII.

The piston blade members 35 are provided journaled in the piston endplates 17. The piston blade members 35 are provided with piston plates37, compression blades 38, and shifting or reversingI blades 39. Theblades 39 alternately constitute cushioning and reversing members andwalls or closures for the compression chambers. The journals of thepiston blade members are disposed within the circumference of the rotor16. The sides 40 of' the compression chambers 26 are inthe arcs ofcircles so that the ends of the compression blades sweep across thesame. The innerpsurfaces 4l of the compression chame'rs are preferablyradial with the axes of the compression blades' close against the samewhen the piston blades are fullyeX- tendedor in firing position. SeeFig. IV. rlhe piston blade members have slot-like in the cam the camgroove being shaped to rock thev ports 42 through which the compressedcharges are delivered between abutments 43 and the piston blades 37. Theabutments 43 are oppositely disposed in the cylinder which is providedwith seats 44 therefor, the abut# ments being rigidly secured in theirseats by screws 45.

The passages 42 are controlled by the oscillating valves 46 whichoscillate on curved. hub-like portions 47 of the members 35. Thesevalves are carried by arms 48 on jour nals 36 of the piston members. SeeFigs. VIII and IX. To limitthe movement of the valves the members 35 arerecessed at 49. The ends of the recesses constitute stops for the arms.The plates are recessed at 50 to receive the valves when they are intheir open position. See Fig. IV, where two ofl the valvesare shown intheir open position and a third valve in its closed position. The curvedhub portions 47 of the piston members are in bearing contact with thesurface 51 at the inner end of the compression chamber, the surfacebeing provided lwith a packing gasket 52 so as to provide a tight jointat this point. l

When the piston blades are in their eX- tended positions the inner endsof the ports 42 are closed by the surface 51. The rotor is recessed at53 to receive the piston blades 37 when they are in their collapsedabutment passing position. The piston blades are provided with packingmembers 54. See Fig. IV.

The means for actuating the piston blade members to compress and deliverthe charges and to pass the abutments consist of the control members 55which are mounted in the chambers 25 between the rotor end plates,

and the casing heads. The control members are provided'with rollers 56which travel groove 57 in the casing heads,

piston members on their journals in proper sequence and at the propertime to compress and deliver the' charges and to pass the abutments. Themembers 55 have curved surfaces 58 which coact with the rollers 59mounted on the cylinder heads at the abutlionents to coact in actuatingthe piston memers.

The cushioning blades 39 are in'the extended position when the pistonblades arein their collapsed position. The air trapped' between theabutments and the blades 39' serves as a cushion reversing or shiftingmember Ato relieve the parts at this point. The abutments are providedwith packing members 60. The front surfaces 6l of the blade 39 yarecurved to correspond with the curvature of tlierotor and serve asclosures or walls for the compression chambers when the piston blade isswung to its extended position.

During the first part of the compression madero strokes the valves 16remain closed. To-

ward the rear ends of the compressionstrokes the valves are opened andthe charge forced into the explosion chamber, behind the piston bladewhile the same is in eXtended position. The blades 39 serve as the innerwalls of the firing or combustion chamber when the charges are fired andowing to the shape of their outer surfaces 61 a good joint is maintainedbetween the surfaces and the inner heads of the abutments which areprovided with the gaskets, as stated. The piston blades remain in theirextended positions until they have passed the exhaust ports G3 when,owing to the shape of the cam 57, they are swung down into the recessesprovided therefor in the rotor. This return movement of the reversingmembers, owing to the friction on the gvalve, returns the valve to itsclosed position.

The spark electrodes 64 and 65 are 'carried by the spark plu-g 66arranged so that the electrodes are directly behind the abutments and ina little recess-67 formed therein for the purpose.

The contact members 68 are arranged through the cylinder and casingwalls to afford connections for the circuit wires 69 and 70. The Contactmembers 7l are mounted on the spark plug and suitably connect- :ed tothe electrodes, see Figs. Xl, XH and XHI. The members 68 are mounted toreciprocate in the cylinder and casing walls and have contact members 72which enga ge with the members 71 when actuated by the pist-on. or rotorblades coming into contact therewith. This insures ignition at theproper point and just as the charge is delivered under compression.While three of the piston blades are shown only two abutments are shown.These abutments, in the structure illustrated, are positioned so thatthe 'charges are not tired simultaneously but alternately. Firing pins68 are provided with springs 73 by which the contact is broken and thepins are returned to their normal position. i

Having thus described my invention l will now point out its operation.`The port 24 being connected to a suitable carburetor when the rotor isrotated a charge of gas or carbureted-air will. pass through the ports28 to the compression chambers the valves register with the ports 29.The piston1 blade members are rocked on their journals as the rotorrevolves compressing the charges in the compression chambers 2G andyforcing them under pressure through the passage 4t2 of the combustionchamber between the abutment and the piston 'bla-de. The piston bladecontacting with the firing pins actuates the same tomale the contact andthereby firing the charges while the gas is still under compression. Theexpansion of the gases carries the rotor past the exhaust port 63allowing the burned gases to escape. After the piston `blades pass theexhaustports the piston blade members are rocked on their journals toswing the piston blades into abutment clearing position. This swings themembers 39 out so that air is trapped between the abutment and theblade. rlnhe front sides 74 of the abutments are shaped so that thefront faces S1 oi" the cushion members rock or ride over the samewithout binding, the rollers 59 engaging in the surfaces 58 to assist incarrying the parts past each other and swinging the piston blade memberson their compression strokes. The rear faces of the piston blades arecurved or channeled to provide clearance. l/Vi'th this arrangement ofparts the charges are delivered to the combustion chambers undersuitable pressure and are fired under pressure so that full eiiiciencyof the fuel is secured. The exhaust gases are freely exhausted withoutretarding the rotor. The structure is compact and moving parts are wellprotected so that they are not likely to be injured and, at the sametime by removing the casing' heads, they are all accessible. rlhisfacilitates manufacture and also repair.

l have illustrated and described my iinprovements in an embodiment whichli regard as satisfactory under ordinary concli-tions. l have notattempted toillustrate or describe various modiications which lcontemplate as l believe the structure illustrated will enable thoseskilled in the art to which my invention relates to adapt or embody thesame as may be desired. lf desire, however, to be understood as claimingmy improvements specifically in the form illustrated as well as broadlyas pointed out in the appended claims.

Having thus described my inventionwhat l claim as new and desire tosecure by Letters Patent, is:

l1. ln a rotary internal combustion engine, the combination with acasing comprising a cylindrical body portion provided with a base' andhaving a fuel inlet passage by it is supported in a spaced relation tothe walls of the casing to provide water spaces certain of whichcommunicate with said water passages of said, casing body, annularcylinder heads disposed between the ends of the cylinder and said casingheads and provided with outwardly projecting iianges abutting the casingheads to provide wate'r vchannels communicating with the water spacesabout the cylinder, a shaft, said -casing heads being provided withbearings for said shaft, a rotor within said cylinder, end plates forsaid rotor rotating within said cylinder heads, said rotor endv platesbeing recessed to receive the inner ends of said delivery passagemembers and having inlet ports therein, there being chambers betweensaid end plates and casing. heads, annular valves mounted in saiddelivery passage members and having ports therein with which said rotorinlet ports register as the rotor revolves, piston blades journaled insaid rotor, abutments for said cylinder, and

means for collapsing and extending said piston blades disposed in saidchambers between said casing heads and rotor end plates.

2. 1n a rotary internal combustion engine, the combination with a casingcomprising a cylindrical body portion provided With a base and having afuel inlet passage and water passa ges therein and casing heads havingfuel conduits therein communicating with said inlet passage of saidcasing body, Said' heads being provided with central inwardly projectingcylindrical passage members having annular delivery passages thereinycommunicating with said fuel conduits, of a cylinder disposed withinsaid casing and provided with longitudinal ribs whereby it is supportedin a spaced relation to the walls of the casing'to provide water Spacescertain of which communicate with said water passages of said casingbody, annular cylinder heads disposed between the ends of the cylinderand said casing heads and provided with outwardly projecting flangesabutting the casing heads to provide water channels communicating withthe water spaces about the cylinder, a shaft, said casing headsbeingprovided with bearings for said shaft, a rotor within saidcylinder, end plates for said rotor rotating withinsaid cylinder heads,said rotor end plates being recessed to receive the inner ends of saiddelivery passage members and having inlet ports therein, there beingchambers between said end plates and casing heads, piston bladesjournaled in said rotor, abutments for said cylinder, and means forcollapsingand extending said piston blades disposed in said chambersbetween said casing heads and rotor end plates.

3. ln a rotary internal combustion engine, the combination with a casingcompr'4 mg a cylindrical body portion having a fuel inlet passage andwater passages therein, and casing heads having incl conduits thereinconnnnnicating with said inlet pass said casing body, said heads beingprovided with central inwardly projectlng passage members havingdelivery passages therein communicating with said fuel passages, of

a cylinder disposed within said casing and provided with longitudinalribs whereby it is supported in a spaced relation to the walls of thecasing to provide water spaces certain of which communicate with saidwater passages of said casing body, cylinder heads disposed to providewater channels communicating with the water spacesabout the cylinder, arotor within said cylinder, end plates for said rotor having inlet portstherein, valves carried by said delivery passage members and havingports therein with which said rotor inlet ports register as the rotorrevolves, piston blades for said rotor, and abutments for said cylinder.

4. In a rotary internal combustion engine,

the combination with a casing comprisinga cylindrical body portionhaving a fuel inlet passage and water passages therem, and casing headshaving fuel conduits there- 1n communicating with said inlet passage of'said casing body, said heads being provided with central inwardlyprojecting passage members having delivery passages thereincommunicating with said fuel passages, of a cylinder disposed withinsaid casing and provided with longitudinal ribs whereby it is supportedin a spaced relation to the walls of the casing to provide water spacescertain of which communicate with said water passages of said casingbody, cylinder heads disposed to provide water channels cornmunicatingwith the water spaces about the cylinder, a rotor withinsaid cylinder,end plates for said rotor having inlet ports therein, piston blades 4forsaid rotor, and abuti ments for said cylinder.

5. In a rotary internal combustion engine, the combination with a casingcomprising a body portion, and casing heads having fuel conduitstherein, of a cylinder disposed within said casing in a spaced relationto the walls thereof to provide a water chamber, annular' cylinder headsdisposed between the ends of the cylinder and said casing heads andprovided with outwardly projecting flanges abutting the casing heads toprovide water channels communicating with the water chamber about thecylinder, a rotor within said cylinder, end plates for said rotorlrotating within said cylinder heads and having inlet ports thereincommunicating successively with said fuel conduits of said :asing headsas the rotor revolves, there being chambers between said end plates andcasing heads, piston blades journaled in said rotor, abutments for saidcylinder, and means for collapsing and extending said piston bladesdisposed in said chambers. A p

G. ln a rotary internal combustion engine, the combination With a casingcomprising a body portion, and casing heads having fuel Cil Within saidcasing in a spaced relation to the Walls thereoi`l to provide a Waterchamber, cylinder heads disposed to provide Water channels communicatingwith the Water chamber about the cylinder, a rotor within said cylinder,end plates for said rotor having inlet ports therein communicatingsuccessively with said fuel conduits of said casing heads as the rotorrevolves, piston blades for said rotor, and abutments for said cylinder.

7. ln an internal combustion engine, the combination with a casingcomprising a body portion having a fuel inlet passage therein, and headsfor said casing having fuel conduits therein communicating with saidinlet passage of said casing body and provided with inwardly projectingdelivery passage members having annular delivery passages thereincommunicating vWith said conduits, a cylinder arranged Within saidcasing, annular vheads 'for said cylinder, a rotor Within said cylinderhaving compression `chambers therein, end plates for said rotor arrangedto rotate Within said cylinder heads and to close the ends of said compression chambers, said end plates being recessed lto receive saiddelivery passage members, and being provided With ports opening intosaid compression chambers, valves for said delivery passages havingport-s therein with, which said ports of said rotor end plates registeras the rotor revolves, piston .members provided ivith piston blades andcompression blades journaled in said rotor end. plates vvitlali theperiphery of said rotor, said piston members being provided with portsdelivering roin said compression chambers, abutments for said cylinder',and means for 'actuating said piston niembers as the rotor reiv ylves.

8. in an inte nal combustion engine, the combination v-:itli easing'comprising a body portion a fuel inlet passage therein, and beads forsaid casing having fuel conduits communicatin: with said inlet ,Y 1 saidcasing bocy and provided with i rclly projecting delivery passagemembers having annular delivery passages therein. communicating saidconduits, a cylinder arranged 'Within said casing, annular beads forsaid cylinder, a rotor Within said cylinder having,7 compressionchambers therein, end plates for Said rotor arranged to rotate withinsaid cylinder heads and to close the ends 01 said Acompression chambers,said end plates be- .ing` .recessed to receive said delivery pasandrovided with ,r f l ,ompression chambers, piston members provided. withpiston blades and compression blades journalcd in said rotor ond platesWithin the periphery of said rotor, said piston members being pro- @5vided with ports delivering from said cornpression chambers, abutmentsfor said cylinder, and means for actuating said piston members as therotor revolves.

` 5). in an internal combustion engine, the combination ot' a casingcomprising a body portici, and heads for said casing having vfuelconduits therein, a cylinder arranged within said casing, annular headsfor said cylinder, abutmcnts within said cylinder, a rotor within saidcylinder haviiig peripheral cominessieu chambers therein, end plates forsaid rotor arranged to rotate within said cylinder heads and to closethe ends of said compression cha uibers said end plates being providedwith ports opening into said compression chambers and communicating Withsaid tuoi conduits as the rotor revolves, piston members provided withpiston blades and .compression blades, journaled in said roten' endplates Within the periphery of said' rotor, saidpiston members beingprovided with delivery ports for said compression chambers, and' meansfor controlling said piston members.

l0. ln an internal combustion engine, the combination of a casingcomprising a body portion, and heads for said casing having fuelconduits therein, a cylinder arranged Within said casing, annular headsfor said cylinder, a rotor Within said cylinder having peripheralcompression chambers therein, end plates for said rotor arranged torotate within said cylinder heads and to close the ends of saidcompression chambers, said end plates being provided with ports openinginto said compression chambers and communicating with said fuel conduitsas the rotor revolves, piston members provided with piston blades andvcompression blades journaled in said rotor end plates within theperiphery of said rotor, said piston members being provided withdelivery ports tor said compression chambers, valves for-said portscarried by arms mounted for oscillating movement on said p'ston memberjournals., stops on said piston members limiting movemento said valves,fixed abutments Within said cylinder', and means for controlling saidpiston members.

il. 'l'n an internal nombustion engine, the combination with a casingcomprising a. body portion having a fuel inlet passage therein, andheads for said casing having fuel conduits therein communicating` withsaid inlet passage of said casing body and l provided with inwardlyprojecting delivery passage members having passages thereincommunicating with said conduit, a cylinder arranged within said casing,a rotor Within said cylinder' provided with compression chambers having'inlet ports at the ends thereof registering with the delivery ports ofsaid delivery passage members as the rotor revolves, piston membersprovided with piston blades and compression blades journaled in saidrotor, abutments for said cylinder, and means for actuating said pistonmembers as the rotor revolves.

12. In an internal combustion engine, the combination of a casingcomprising a body portion, and heads having fuel conduits therein, acylinder arranged Within said casing, a rotor within said cylinderhaving compression chambers therein, end plates forsaid rotor providedwith ports opening into said compression chambers and communicating withsaid fuel conduits of said head, piston members provided with pistonblades and compression blades journaled in said rotor end plates, saidpiston members being provided with ports delivering from saidcompression chambers to the combustion chambers of the cylinder, andmeans for actuating said piston members, comprising control membersmounted on the piston members within said casing and cams on said casingheads coacting With said control members. y 1

13. In an internal combustion engine, the combination of a casingcomprising a body portion, and heads having fuel conduits therein, acylinder arranged within said casing, a rotor within said cylinderhaving com-Z pression chambers therein, said rotor being provided withports communicating successively with said 'conduits in said casingheads, piston members provided with piston Y.,

blades and compression blades journaled in' said rotor, said pistonmembers being provided with ports delivering from said compressionchambers to the combustion chambers of the cylinder, and means foractuating said piston members, comprising control members mounted on thepiston members within said casing and cams on said easing heads coactingwith said control members.

14. In an internal combustion engine, the

combination of a cylinder, abiitments Within said cylinder, a rotorwithin said cylinder, piston members journaled on said rotor, controlmembers on said piston members, control cani members having cam groovestherein, rollers on said control members traveling in said cam grooves,and rollers positioned at the abutinents to engage` said reversingmembers, said reversing members being provided with cams coacting withsaid rollers positioned at the abutments.

1'5.` In an internal combustion engine, the combination oi' a cylinder,fixed abutments within said cylinder. a rotor, piston inembers mountedon said rotor within said cylinder for oscillating movement, controlmembers on said piston members, rollers on said control members,control. cam members with which. rollers coact, and rollers positionedat the abutments to engage said eontrol members, said control membersbeing provided with cams coacting With said rollers positioned at theabutments.

lating movement and provided With piston blades, compression blades andshiftingV blades, said bladesbeing positioned so that the shiftingblades swing into the compression chambers and constitute walls thereforwhen the piston blades are extended and swing to extended position andconstitute cushioning members when the piston blades are collapsed intotheir said recesses, said piston members being provided with portsdelivering between the piston and shifting blades and opening into thecompression chambers in front of the compression blades, sliding valvesfor said ports, there being recesses at the bases of the compressionblades adapted to receive the valves when they are open, means foroperating said valves as the piston members are actuated, and means foractuating said piston members as the rotor revolves.

17. In an internal combustion engine, the

combination of a cylinder, fixed abutments fwithin said cylinder, saidcylinder being provided with exhaust ports between said abutments, acylindrical rotor Within said cylin- 'der having peripheral compressionchambers and piston blade recesses therein, rotating within the casingwith itsfperiphery close to.

the inner ends ofvsaid abutments, piston members journaled on said rotorfor oscillating movement and provided with piston blades, compressionblades and shifting blades, said blades being positioned so that theshifting blades swing into the compression chambers and constitute wallstherefor when the piston blades are extended and swing to extendedposition and constitute cushioning members when the piston blades arecollapsed into their said recesses, said piston members being providedwith ports delivering between `the piston and shifting blades andopeningA into the compression chambers in frontlot the compressionblades, valves for said ports, lmeans for operating said. valves as thepiston members are actuated, and means for actuating said piston membersas the rotor revolves.

18. In an internal combustion engine, the combination of a cylinder,fixed abutments Within said cylinder, the front sides of said abutmentsbeing inclined rearwardly, said cvlinder being provided with exhaustports between said abutments, a cylindrical rotor within said cylinderhaving peripheral com-.

medew therein, rotating within the casing with its periphery close tothe inner ends of said abutments, piston members journaled on saidrotorfor oscillating movement and provided, with piston blades, compressionblades and shifting blades, said blades being posi tioned sc that theshitting blades swing into the compression chambers and constitute wallstherefor when the piston blades are extended and sving to extendedposition and: constitute cushioning members when the piston blades are'collapsed into their said recesses, the iront sides oit said shiftingbladesbeing curved to correspond to the curvature of the rotor, thepiston blades loe-- ing curved on their real" faces to provide clearancefor the ends of the abutments as the piston blades are swung to theirextended positions, said piston members beingr provided With portsdelivering betveen the piston and shitting blades and opening into thecompression chambers in front of the compression blades, valves for saidports, means for' operating said valves as the piston members areactuated, and means for actuating said' piston members as the rotorrevolves.

19. ln an internal combustion engine, the; combination of a cylinder,lixed abutments Within said cylinder, the front sides of said abutmentsbeing. inclined rearwardly, said cylinder being provided with exhaustports between said abutments, a cylindrical rotor within said cylinderhaving peripheral coinpression chambers and piston blade recessestherein, rot-ating within the ising with its periphery close to theinner ends ot said abutments, piston members ournaled on said rotor foroscillating movement and provided with piston blades, compression bladesand shifting blades, said blades being positioned so that the shiftingblades swing into the' compression chambers and constitute wallstherefor when the piston blades are extended and swing to extendedposition and constitute cushioning members when the piston blades arecollapsed into their said recesses, the front sides ot said shittingblades boing curved to correspond to the curvature of the rotor, thepiston blades heilig curved on their rear faces to provide clearance forthe ends ofthe abutments as the piston blades are swung to theirextended positions, said piston members being provided with portsdelivering between the piston and shitting blades and opening into thecompression chambel s in front of the compression blades and means loactuating said piston inem bersas the rotor revolves.

Q0. ln an internal comlaisthm engine, the combination oil a cylinder,lixcd abutments within said cylinder, said cylinder being provided withexhaust ports between said abutments, a cylindrical rotor within saidcylinder having peripheral compression chambers and piston bladevrecesses therein, rotating Within the casing with its periphery close tothe inner ends of said abutments, piston members journaled on said rotorfor oscillating movement and provided with piston blades, compressionblades and `:shifting blades, said blades being positioned so that theshitting blades suing into the compression chambers and constitute wallstherefor when the piston blades are extendv ed and swing to extendedposition and constitute cushioning members when the piston blades arecollapsed into their said recesses, said piston members being providedwith ports delivering between the piston and shitting blades and.opening into the compre sion chainbers in front ot the compres sionblades and means for actuating said piston members as the rotorrevolves.

2l. lnan internal combustion engine, the combination of a cylinder-l,fixed abutments Within said cylinder, a rotor Within said cylinderhaving compression chambers therein, inlet connections for saidcompression chambers, piston members ournaled for oscillating movementwithin the periphery w of said rotor and provided with piston blades,compression blades, and shifting blades, the said shitting blades beingextended and constituting cushioning and reversing members whenthefpiston blades are collapsed and being collapsed into the comlpression chambers and constituting the outer ivalls thereof when thepiston blades aro erected, said piston members being provided with portsdelivering between the piston and the. shii'iting blades and openinginto the compression chambers in iront or' the compression blades,valves tor said ports mounted for oscillating movement upon theactuation of said piston members, means for actuating' ,sa id pistonmemliers and an ignition means actuated by the piston blades when the)7are extended.

2?'. ln an internal combustion engine, the combination of a cylinder,tixed abutments within said cylinder, a rotor within said cylinderhaving i compression chambers therein, inlet connections ior saidcompression chambers, piston members journalcd for oscillating movementwithin the periphery of said rotor and provided with piston blades,compression blades, and 'shitting blades, the said shit-ting bladesbeine' extended and c/.instituting cushioning and reversing members whentheI piston blades are. collapsed and beine; collapsed into thecompression chan'ibers and constituting the outer walls thereof when thepiston blades are erected, m uns vlor actuating said piston members andan ignition means actuated by the piston blades when they are extraided.

33. ln an internal, combustion engine, the combination ot acylinder,lixcd almtments Within said cylinder, a rotor within said cylindercylinder having compression chambers therein, inlet connections for saidcompression chambers, piston members journaled for oscillating movementwithin the periphery of said rotor and provided with piston blades,compression blades, and shifting blades, the said shifting blades beingextended and constituting cushioning and reversing members whenthepiston blades are collapsed and being collaps d into the coin-Vcombination of a cylinder, fixed abutments Within said cylinder, a rotorWithin. said having` compression chambers therein, inlet connections forsaid compression chambers, piston members journaled for oscillatingmovement within the periphery of said rotor and provided with pistonblades, compression blades, and shifting blades, the said shittingblades being extended and constituting cushioning and reversing memberswhen the piston blades arc collapsed and being collapsed into thecompression chambers and constituting the outer .valls thereof When thepiston blades are extended and means for actuating .said piston members.

25. In an internal combustion engine, the combination o a cylinder,fixed abutments within said cylinder, a rotor Within said cylinderhaving peripheral compression chambers therein, piston members journaledon said rotor for oscillating movement and provided with piston blades,coi'npression blades and members constitutingouter Walls foithecompression chambers when the piston blades are extended, said pistonmembers being provided with delivery ports tor said compressionchambers, sliding valves for said-ports, there being recesses at thebases of tlie compression blades adapted to receive the valves when theyare open, means for operating said valves as the piston members areactuated., and means for actuating said piston members as the rotorrevolves.

26. In aninternal combustion engine, thc

i combination of a cylinder, fixed al'iutmcnts Within said, cylinder, arotor within said cylinder having peripheral con'ipression chamberstherein, piston members journaled on said rotor for oscillating movementand providedl with piston blades, compression blades and membersconstituting outer Walls for the compression chambers when the pistonblades are extended, said piston members being provided With deliveryports for said compression chambers, valves for said ports, means foroperating said valves as the piston members are actuated, and means foractuating said piston members as the rotorr revolves.

27. In an internal combustion engine, the combination of a cylinder,fixedabutments Within said cylinder, a rotor Within said cylinder havingperipheral compression chambers therein, piston members journaled onsaid rotor ior oscillating movement and provided With piston blades,compression blades and members constituting outer Walls for thecompression chambers when the piston blades are extended, and means foractuating said piston membersas the rotor revolves. l

28. In an internal combustion engine, the

'combination of a cylinder, abutments Within said cylinder, acylindrical rotor Within said cylinder having peripheral compressionchambers and piston blade recesses therein, piston members journaled onsaid rotor for oscillating movement and provided with piston blades andcompression blades, said piston members being provided with deliveryports for said compression chambers, sliding valves for said ports,there being recesses at the bases oit' the compression blades adapted toreceive the valves When they are open, means for operating said valvesas the piston members are actuated, and means for actuating said pistonmembers as the rotor revolves. y

29. In an internal combustion engine, the combination of a cylinder,abutments Within said cylinder, a cylindrical rotor within said cylinderhaving peripheral compression chambers and piston blade recessestherein, piston members journaled on said rotor for oscillating movementand provided with piston blades and compression blades, said pistonmembers being provided with delivery ports for said compressionchambers, valves for said ports, means for operating said valves as thepiston members are actuated, and means for actuating said pis-A andmeans for` actuating said piston members as the rotor revolves.

3l. n an internal combustion engine, the combination of a cylinder,fi'xe'd abutments within said cylinder, a rotor Within said cylinderhaving peripheral compression chambers therein, piston members ]ournaledfor oscillating movement Within the periphery of said rotor and providedWith piston blades, compression blades, and shifting blades, the saidshifting blades being extended and constituting reversing members Whenthe 'piston blades are collapsed and being collapsed into thecompression chambers and constituting the outer Walls thereof When'thepiston blades are extended and means for actuating said piston members.

32. In an internal combustion engine, the combination of a cylinder,fixed abutments Within said cylinder, said cylinder having exhaust portsbetween said abutments, a rotor Within said cylinder having peripheralcompression chambers therein, end plates for said rotor closing the'endsof said chambers and provided with fuel inlet ports opening into saidcompression chambers, piston members journaled in said rotor end platesWithin the periphery of the rotor and provided With piston blades andcompression blades, said piston members being provided with portsdelivering at the rear of the piston blades and opening into compressionchambers in front of the compression blades, valves for said portscarried by arms mounted for oscillation on the said piston memberjournals, stops on said piston members limiting the movement of saidvalves, there being recesses at the bases of the compression bladesadapted to' receive the valves, and means for actuating said pistonmember journals on the outer sides of said rotor .end plates.

33. In an internal combustion engine, the combination of a cylinder,abutments Within said cylinder, a rotor Within said cylinder havingcompression chambers,4 piston members journsled in said rotor andprovided with piston 1ilades and compression blades, said piston membersbeing provided with ports delivering at the rear of the piston bladesand opening into compression chambers in front of the compressionblades, valves for said ports carried by arms mounted for oscillation onthe said piston member journals, stops on said piston members liml vitinthe movement of said valves and means for actuating' said pistonmembers.

84. ln an internal combustion engine, the combination of a cylinder, arotor Within said cylinder having compression chambers, rotatablymounted piston members onsaid rotor and provided With piston blades andcompression blades, and means for actuating said piston members,comprising control members mounted on said piston mem-I bers andcamscoacting with said. control members.

35. ln an internal combustlon engine, the

combination of a cylinder, a rotor Within said cylinder havingcompression chambers, rotatably mounted piston members on said rotor andprovided With piston blades and compression blades, and means foractuating said piston members.

36. ln an internal combustion engine, the combination of a cylinder, arotor within said cylinder having compression chambers therein, endplates for said rotor provided with ports opening into said compressionchambers, piston members journaled in said rotor end plates and providedwith piston blades and compression blades, said piston members beingprovided with ports deliver'- ing from said compression chambers, andmeans for actuating said piston members, comprising control membersmounted on the outer ends of said piston member journals and memberscoacting therewith.

37. In an internal combustion engine, the combination of a cylinder, arotor Within said cylinderv having compression chambers therein, endplates for said rotor, piston members journaled in said rotor end platesand provided with piston blades and compression blades, and means foractuating said piston members, comprising control members mounted on theouter ends of said pistion member journals and members coactingtherewith.

38. In an internal combustion engine, the combination of a cylinder,abutments Within said cylinder, a rotor Within said cylinder havingcompression chambers, piston members journaled in said rotor andprovided with piston blades and compression blades, said piston membersbeing provided with ports delivering at the rear of the piston bladesand opening into the compression chambers in front of the compressionblades,

means for actuating said piston members, and valves for said portsactuated by the oscillation of said piston members.

39. ln an internal combustion engine, the combination of a cylinder,abutments within said cylinder, a rotor Within said cylinder havingcompression chambers, piston members jo-urnaled in said rotor andprovided with piston blades and compression blades and means foractuating said piston members.

In Witness whereof, I have hereunto set my hand and seal in the presenceot' two Witnesses.

CHARLES E. CLAYToN, RALEIGH A. GILBERT.

